Improvement in dies for making stock-bell staples



0. B. WIL 0 Dies for Making Sto ell Staples.

No. 220,558. Patented Oct. 14, 1879.

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ifli a N.PETERS, PHOTQ-LITHOGRAFHER WASHINGTON. D C,

UNITED STATES PATENT OnFIon OSCAR B. WILSON, on connrnsvlnnn, ILLINOIS.

IMPROVEMENT IN DIES FOR MAKING STOCK-BELL STAPLES.

Specification forming part of Letters Patent No. 220,558, dated October14, 1879 application filed June 4, 1879.

To all whom it may concern:

Be it known that I, OSCAR B. WILsoN, of Collinsville, Illinois, havemade a new and useful Improvement in Dies for Making Stock- BellStaples, of which the following is a full, clear, and exact description,reference being had to the annexed drawings, making part of thisspecification, in which.

Figure 1 is a central longitudinal section; Fig. 2, a plan of the dies;Fig. 3, a view showing the rod fronrwhich the staples are made, one ofthe blanks being detached; and Fig. 4, a finished staple.

The same letters denote the same parts.

The staples of stock-bells are made from blanks cut from a rod, usuallyhalt oval in cross-section. The practice heretofore in making them hasbeen-to first cut the rod into blanks, and afterward, and bya secondoperation, to form a tongue at each end of the blank, for the purpose ofattaching the staple t0 the shell of the bell. The blanks are then giventheir shape by bending first one end and then the other end of theblank. The various operations named, in addition to being vshownthat is,havingthe portions a a united by the portion o the portions a a beingspaced apart a distance less than the width of the rod from which theblanks are made, and equal to the width of the tongue that it is desiredto form upon the blanks. The portion M, in the direction of the lengthof the machine, is longer than the combined lengths of the tongues oftwo adjacent blanks. The rod B is fed along above the opening a, andthen, by means of a punch, C, which in shape corresponds to the openinga, is cut so as to form the tongue I), Fig. 3, at its inner end. The rodis then moved along again a blank-length, (the movement being suitablyguided and gaged), when the punch Cl is again forced down into theopening a. This movement causes an I-shaped piece, 11, (indicated by thedotted lines in Fig. 3,) to be cut out of the rod. and both severing theblank b from the rod and forming the tongues b b. The rod B is thenmoved along another blank-length, and the operation is repeated. Thus,by a single movement of the punch O, the blank b is out off and a tongueformed both on the staple-blank and on the rod. The staple-blank, havingthe tongues 1) 12 then passes onto a second die, D, where, by means of apunch,

E, it is bent into the form shown at F, Fig. 4,. The die D has anopening, 01, as long as the finished staplethat is, from f to fwhile thepunch E is sufliciently shorter than the opening d to enable the blankto be bent without shearing it upon the edges of the opening 0?. The dieD has a groove, d, at each end of the opening d, to enable the blank tobe securely held as it is being struck by the punch.

The die A is, preferably,furni'shed with faceplates a a, held by screwsa a, which are detachable, and which when worn can be removed and newones inserted. The dies A and D are held in a bed-plate, G.

The punches O E can be operated by any suitablepower, and they can beheld in a suitablehead. (Indicated at H, Fig. 1.)

The opening 01 in the die D insures the staples being made of uniformlength.

I claiml The die A, having the I-shaped opening a, and punch O, of theform described, jointly with the die D, having opening d, and punch E,for cutting out and bending ton gued blanks for stock-bell staples,substantially as shown and described.

OSCAR B. WILSON.

Witnesses:

O. D. MOODY, CHAS. E. Dow.

